Global Patent Index - EP 0951141 A3

EP 0951141 A3 20000126 - Audio direct from power supply

Title (en)

Audio direct from power supply

Title (de)

Direktes Audiosignal aus der Speisespannung

Title (fr)

Signal audio directe de l'alimentation

Publication

EP 0951141 A3 (EN)

Application

EP 99302842 A

Priority

US 6015398 A

Abstract (en)

[origin: EP0951141A2] A novel circuit that generates direct audio from a power supply that uses no power amplifier and that can provide full isolation to any impedance load. It has no power amplifier output stage and has a zero signal-to-noise ratio when there is no signal input because the circuit is designed with MOSFETS that do not conduct unless there is a signal input. <IMAGE>

IPC 1-7

H03F 3/217; H03F 1/02

IPC 8 full level

H03F 1/02 (2006.01); H03F 1/26 (2006.01); H03F 3/217 (2006.01)

CPC (source: EP)

H03F 1/0222 (2013.01); H03F 3/2171 (2013.01); H03F 3/38 (2013.01)

Citation (search report)

Designated contracting state (EPC)

AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

DOCDB simple family (publication)

EP 0951141 A2 19991020; EP 0951141 A3 20000126; EP 0951141 B1 20040915; CA 2268421 A1 19991014; CA 2268421 C 20030805; DE 69920099 D1 20041021; DE 69920099 T2 20050120; JP 2005348452 A 20051215; JP 4397457 B2 20100113; JP H11355062 A 19991224; US 5986498 A 19991116

DOCDB simple family (application)

EP 99302842 A 19990413; CA 2268421 A 19990409; DE 69920099 T 19990413; JP 14380599 A 19990414; JP 2005255773 A 20050902; US 6015398 A 19980414